Hankook Optimo H724 Radial Tire - 205/70R15 96T 70,000 Mile Warranty Center Rib Block - The center rib improves handling and stabilty during lane change maueuvers. Pitch Design Technology - 5 pitch technology reduces tire noise for a quieter ride. Variable Lateral Grooves - Variable groove widths maximize water discharge and minimizes the potential for hydroplaning. Multi-Kerf with Optimal Radius - Computer optimized multi-kerf (sipe) design improves ride comfort and provides enhanced traction in rainy driving conditions.